78225684099 has 4 divisors (see below), whose sum is σ = 104300912136. Its totient is φ = 52150456064.

The previous prime is 78225684067. The next prime is 78225684113. The reversal of 78225684099 is 99048652287.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78225684099 - 2⁵ = 78225684067 is a prime.

It is a super-2 number, since 2×78225684099² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78225684499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13037614014 + ... + 13037614019.

It is an arithmetic number, because the mean of its divisors is an integer number (26075228034).

Almost surely, 2^78225684099 is an apocalyptic number.

78225684099 is a deficient number, since it is larger than the sum of its proper divisors (26075228037).

78225684099 is a wasteful number, since it uses less digits than its factorization.

78225684099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26075228036.

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 78225684099 in words is "seventy-eight billion, two hundred twenty-five million, six hundred eighty-four thousand, ninety-nine".